03-07-2017, 11:01 PM
Also note that the barometric pressure is in psi so sea level would be about 14.7 psi which would be 29.92 inches of mercury (inHg) which is what a pilot would be used to using. It also does not adjust itself as you are driving down the road. The engine must return to idle for the barometric pressure to readjust itself and provide a new reading for the DDEC.